STIGQter: STIG Summary: VMware vSphere 7.0 vCenter Appliance Photon OS Security Technical Implementation Guide Version: 1 Release: 4 Benchmark Date: 30 Jan 2025:

The Photon operating system must configure sshd to use FIPS 140-2 ciphers.

DISA Rule

SV-256534r958850_rule

Vulnerability Number

V-256534

Group Title

SRG-OS-000394-GPOS-00174

Rule Version

PHTN-30-000064

Severity

CAT III

CCI(s)

• CCI-002421 - Implement cryptographic mechanisms to prevent unauthorized disclosure of information and/or detect changes to information during transmission.
• CCI-003123 - Implement organization-defined cryptographic mechanisms to protect the confidentiality of nonlocal maintenance and diagnostic communications.

Weight

10

Fix Recommendation

Navigate to and open:

/etc/ssh/sshd_config

Ensure the "Ciphers" line is uncommented and set to the following:

Ciphers aes128-ctr,aes128-gcm@openssh.com,aes192-ctr,aes256-gcm@openssh.com,aes256-ctr

At the command line, run the following command:

# systemctl restart sshd.service

Check Contents

At the command line, run the following command:

# sshd -T|&grep -i Ciphers

Expected result:

ciphers aes128-ctr,aes128-gcm@openssh.com,aes192-ctr,aes256-gcm@openssh.com,aes256-ctr

If the output matches the ciphers in the expected result or a subset thereof, this is not a finding.

If the ciphers in the output contain any ciphers not listed in the expected result, this is a finding.

Vulnerability Number

V-256534

Documentable

False

Rule Version

PHTN-30-000064

Severity Override Guidance

At the command line, run the following command:

# sshd -T|&grep -i Ciphers

Expected result:

ciphers aes128-ctr,aes128-gcm@openssh.com,aes192-ctr,aes256-gcm@openssh.com,aes256-ctr

If the output matches the ciphers in the expected result or a subset thereof, this is not a finding.

If the ciphers in the output contain any ciphers not listed in the expected result, this is a finding.

Check Content Reference

M

Target Key

5520